Wire stripping tool



May 10, LUND WIRE STRIPPING TOOL Filed April 21, 1951 R O T. m

e W H Luna, BYWZKM ATTORNEY Patented May 10, 1932 ism LUND, or nETaoInMmHreA- wntr. srnrrrING, TOOL.

Application filed April 21,

My invention relates to a wire stripping tool and particularly to a wire stripping tool for removing the insulation from electrical wiring of various kinds. 7

Wire stripping tools heretofore used for the purpose of removing insulation from electrical wiring have been unhandy and unsuccessful when in general use by an electrician in the wiring of a building or the like. Such tools have had no provision for the stripping of a loop in the wire and have been limited generally to a small length of wire which may be stripped by using the tool. Other of such tools require so much force by the operator that they are impractical for general use. Likewise, no provision has heretofore been made for automatically cleaning.

the knives used in cutting insulation after the tool is used.

It is, therefore, an object of my present invention to providefa wire stripping tool which is convenient to use and which may. be used for cutting and stripping insulation of electrical wiring at any length or for stripping a loop in the Wire.

These, and various other objects, features of arrangement, construction and operation, are plainly shown and described and'will be best understoodby reference to the act-enipanying drawings showing a. preferred embodiment of my invention, in which I Fig. 1 is a side elevation of a wire strip-- 7 ping tool embodying my invention Fig; 2 is a longitudinal sectional view of"- l a wire stripping-tool embodying my invention . Fig. 3 1s a sectional view takenon the line 3 3 of Fig. 2;

Fig. 4 is a sectional view taken on the line 44 of Fig. 2;

Fig. 5 is a sectlonal view taken onthe line 5-5 of Fig. 2.

7 designates a lower grlpplng handle, pivot ally connected by a hinge portion 8 to form the wire stripping tool of my invention. Each of the gripping handles Band 7 has a channel the wire and ou-tJOf. thetooli V.

vwire is" 193i; Serial N 531,734;

shaped groove 9L 4 extending throughout-the length of" the tool. Slid'ably mounted in each of the grooves9'1aremembers-IQyieldingly' held 7 inplace by springs; 11; secured: to the members and the grippingihand les 6 and 7. On theends of each of the members 10: are kn ives. "I2,"hereafter referred to as stripping'lmives." The knives 1 2 are remov g I ably secured'tothe InemberslO by screws orsimilar meansand may be renewed frojnrtimeitotimeor' maybe replaced with knivesihavdifferent sized central openings to accom-l modate the 'diiferentsizes of wire- It is: de

sir-sable that the knives l2ishould scrape the wire after the. insulation is removed so that i it is ready for-soldering withoutthe necessity of further cleaning or scraping operations. 1

f Adjacent theend of each.- ofthe gripping? handles 6 and 7 opposite to the hinge 8 are: plates 13'. provided. with knifeiportionsl l', these knife portions. "14 hereafter being re: ferred toas stationary cutting knives. Also secured to. each. of the gripping handles; are;

spring knife cleaningmembers15;.which have slotted end portions adjacent. the stationaryknivesl h- I V The operation ofmy invention; is: as follows: As shown in Fig. 1, awire 16,; hav

ingan insulated coveringtl'l, is placed: inithe central opening between. the upper: gripping handle 6 and the lowergripping; handle/Z. Pressure'is then applied-to the grijgminglien;-

dles6 and 7,. and the stationary: knives 1:4;

andrthe'stripping knives 12 cut through the insulation 17to the'wirelfi';v A pulliistheni exerted on the tool; and: the stnipping'knives 12; mountedon the sliding members: 0] 331162 pulled out of thehandles fi 'andi'l. :Uporr con.- tinu'edipull: on: the tool the knives 14' continue. to slit the insulationflll, which. permits the stripping, knives. 12-1to rollthe insulation oif;

. After the desired amount of stripped, releasing theihandlesv 6E and 7: rtemoveszthe knives I la-and 12 fromtheewine and the spring cleaning members 15 remove! any accumulated rubber, fabricor the-like from theknives l t so that; the tool is ready for immediate use without firstcleaning tlie.

I; j f. 9

tool:oftheaccumulatedimatterii' By constructing my tool with a hinge 8 on one side only of the gripping handles 6 and 7 it is possible to use this tool for stripping any desired lengths of wire or for stripping'a looped'wire on the looped portion.

After the tool has been removed from the wire, the springs 11 cause the members 10 and movable knives'12 to assume theposition shown in Fig. 2, thus making the tool small and easy to carry when not in use.

While I have illustrated a preferred embodiment of my invention, many modifications may be made without departing from the spirit of the invention, and I do not wish to be limited to the precise details of construction as herein set forth, but desire to avail myself of all changes within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

VI. A Wire stripping tool including a body portionhaving a longitudinal slot therein to accommodate thepassage of wire through the tool, a plurality of fixed knives adjacent one end of .said slot and adapted to slit the insulation of a wire longitudinally thereof as the tool is moved relative to suclrwire, and aplurality ofvs'lidable knives adjacent said stationary knives and adapted to sever the insulation on a. wire at'right angles to the longitudinal slitting of the insulation by said fixed knives and to be embedded therein, and means for exerting" pressure on said. knives and for movingsa-id tool'relative to the wire passing therethrough. .7

- 2, A wire, stripping tool including a pair of pivotally connected gripping handles, a

' fixed knife adjacent onerend of each of said gripping handles, a channel shapedslotted portion extending lengthwise of each of said gripping handles, a member slidably mounted in each of said channel shaped slotted portions,:stripping knives mounted on each of said membersand adjacent said fixed knives whereby said fixed knives may cut through the insulation on a wire to be stripped prior tothe action of said stripping knives.

3. A wire stripping tool including a pair of pivotally connected gripping handles, a fixed knife adjacent one end ofeach of said gripping handles, achannel shaped slotted portionextending lengthwise of each of said gripping handles, a member slidably mounted in each of said channel shaped-slottedlportions, stripping knives-mounted on each of said members and adjacent said fixed knives whereby said fixed knives may cut through the insulation on a wire to be stripped prior tothe action of said'strippingknives, and

7 means adjacent said fixed knives forcleanmg said knives. r a j A. A Wire stripping tool including a pair" of pivotally connected gripping handles, a" fixed knife adjacent ronetend of each 'of said means adjacent said fixed knives for clean ing said knives and including a spring member secured toeach of said handles.

In witness whereof I hereunto subscribe my name this 20th day of April, 1931.

ARNE LUND. 

